gaetke



Feb. 7, 1956 cs. 0. GAETKE v 2,733,496

SPA ING NUT FOR USE WITH FORM CLAMPS Filed Jan. 15, 1953 INVENTOR.GEORGE 0. GAETKE ATTORNEY United States Patent @fifice 2,733,496 795???fi ht. i. 2 $61 This invention relates to concrete form clamps and moreparticularly to a novel spacing nut which is adapted for use with-form:clamps=to mairitaintwo opposed form walls in spaced relation Formclampsof""the"type embodying my invention hoidesuohi. form" walls--inrigid spaced-relationshipThe," capabfe Cof being easily assembledanddisassembled; "to --labor-costs may be eliminated.

or is apt to require operative condition.

The type of form clamp of which my novel spacing simple in construction,

thereby making it possible to minimize the cost of at least one of theimportant items of building construction. The provision such as thatembodying my inthe said nut and the associated waler rod.

The principal object of my invention is to provide a novel spacing nutfor use with form clamps, one which makes it possible to employ asimplified form clamp in the construction of concrete forms.

In the accompanying drawings Fig. l is a side elevational view of a formclamp of the type employing my novel spacing nut;

Fig. 2 is an enlarged side elevation of a part of the clamp, showingparts broken away and in section;

ig. 3 is a sectional view of a concrete wall after the wooden form andparts of the clamp have been reanci s co, assignor t o 2;; moved,.showing the spacing nuts before they have been extracted fromthe"said"cbn reteTWEiIIE and Fig; 4 is a 'front"view of a spacing niltinvention. i "Referring to the d bedded after the 'concret'e' har d L atthe-inner end of eachw'alr rod rand ih'efexternal threads 3 are of'thesame pitch; and such th reads arej of the Acme or squared 'tlype." Eachwaler rod 1' cam:

pr ses an inner smooth, or tapered, section 4," a short threaded portion3 having, a maximum than. ,thaseqt a .4

Detachably secured to the short threaded each waler rod 1 of the formwalls 7 and the clamping nuts 10 are arranged in firm clamping engage-The threads of the spacing nuts diameter of the flange 11b issubstantially smaller than the maximum diameter of the waler rod wherethe maximum height of the threads 3 occurs. The flange 11b of thespacing nut 11 abuts the threaded portion 3 of a waler rod when the nuthas been turned sufliciently to effect such a result, and when sopositioned on the red liquid or plastic concrete material from insidethe form is normally prevented from contaminating the threads of eitherthe nut or the threads of the said short threaded section.

After the dismantling of the form walls 7 and the detachment and removalof the waler rods 1, 1, the internal threads of either spacing nut 11may be engaged by a suitable hooked or other device when such spacingnut 11 is to be extracted from the concrete wall and thereby salvagedfor further use.

What I claim is:

1. In a form clamp of the type adapted for use in combination with walerrods to hold form walls in spaced relation, an internally threadedspacing nut engageable with the inner face of one of such form walls andhaving an inwardly converging annular serrated periphery and an inwardlyprotruding circular flange on its smaller end, the said circular flangebeing located directly adjacent the end threads at the smaller end ofthe nut and the said flange having a smaller diameter than the insidediameter ofthe spacing nut.

2. In a form clamp of the type adapted for use in holding opposed formwalls in spaced relation, a pair of spaced aligned waler rods extendinginwardly through the form walls, each waler rod having its inner enddetachably connected to a connecting rod, and each waler rod having ashort threaded section positioned adjacent and internally of the formwall through which it extends, the threads of each threaded sectionextending outwardly from the circumferential surface of its associatedwaler rod, and a spacing nut detachably screwed on the short threadedsecti-on of each waler rod and arranged in abutting relation to the formwall through which its associated waler rod extends, each of saidspacing nuts having an inwardly converging serrated periphery and aninwardly protruding circular flange on its smaller end, the said flangehaving a smaller inside diameter than the outside diameter of itsassociated threaded section, and the said flange being arranged forabutting engagement with the threads of the short threaded section ofits associated waler rod.

References Cited in the file of this patent UNITED STATES PATENTS1,116,241 Carlson Nov. 3, 1914 1,665,649 Whitescarver et al. Apr. 10,1928 1,851,339 Williams Mar. 29, 1932 2,044,444 Pond June 16, 19362,235,442 Parmenter Mar. 18, 1941 2,375,325 Robertson May 8, 19452,388,865 Parmenter Nov. 13, 1945

